Code wars
Subtitle: how 'ultra' and 'magic' led to Allied victory
By: John Jackson
Publisher: Pen & Sword Military
Published: 2011
Place of publication: Barnsley, South Yorkshire
Language: eng
Number of pages: 216
ISBN-13: 9781848845107
Subjects: ULTRA (Intelligence system); World War, 1939-1945; Cryptography
Notes: Includes bibliographical references (p. [207]-208) and index.